| Vendor | Spec | Unit | Price | Currency | Date |
| HAOHUA-JUNHUA Group Co., Ltd. | China national standards | MT | 161.85 | USD | 20251001 |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 168.88 | USD | 20250930 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 205.47 | USD | 20250930 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 173.11 | USD | 20250930 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 175.92 | USD | 20250930 |
| Tongdai Haijing NATURAL SODA Co., Ltd. | China national standards | MT | 168.88 | USD | 20250930 |
| Hubei Shuanghuan Science and Technology Stock Co., Ltd. | China national standards | MT | 211.1 | USD | 20250930 |
| Shandong Haihua Co., Ltd. | China national standards | MT | 182.96 | USD | 20250930 |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 260.36 | USD | 20250930 |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 194.22 | USD | 20250930 |